Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11448529 | Optical rotary encoder | — | 2022-09-20 |
| 11175588 | Additive manufacturing apparatus | — | 2021-11-16 |
| 8477573 | Optical pickup head | Yi Chiu, Chen-An Lin | 2013-07-02 |
| 7652969 | Holographic optical accessing system | Hsiao-Yi LiHsiao-Yi | 2010-01-26 |
| 6807141 | Planar integrated micro-optical pickup head including two planar cylindrical collimators | Chi-Lone Chang, Yuan-Chin Lee, Chau-Yuan Ke, Dai Huang, Jau-Jiu Ju | 2004-10-19 |
| 6577376 | Optical device with variable numerical apertures | — | 2003-06-10 |
| 6377520 | Robust and versatile focus/tracking method and system for optical pickup heads | Mark O. Freeman, Jinn-Kang Wang | 2002-04-23 |
| 6369377 | Multiple-beam holographic optical pick-up head | Jau-Jiu Ju, Tzu-Ping Yang, Wei Lu, Mark O. Freeman, Der-Ray Huang +1 more | 2002-04-09 |
| 6211511 | Dual-wavelength optical pickup head | Tzu-Ping Yang, Mark O. Freeman, Jinn-Kang Wang | 2001-04-03 |
| 6188132 | Two-wavelength semiconductor laser diode package for use on the read/write head of an optical drive capable of reading different types of optical discs | Tzu-Ping Yang, Jinn-Kang Wang, Mark O. Freeman | 2001-02-13 |